sync: Mass rename of non-blocking sync classes

sync/internal_api/sync_context_proxy.cc

Index: sync/internal_api/sync_context_proxy.cc
diff --git a/sync/api/attachments/attachment_downloader.cc b/sync/internal_api/sync_context_proxy.cc
similarity index 60%
copy from sync/api/attachments/attachment_downloader.cc
copy to sync/internal_api/sync_context_proxy.cc
index a0108f70e8941f26b4cbd4bb9429dd5432216207..53c2bd3fe90e177478a5ab3a32163ed4a58d838f 100644
--- a/sync/api/attachments/attachment_downloader.cc
+++ b/sync/internal_api/sync_context_proxy.cc
@@ -2,11 +2,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "sync/api/attachments/attachment_downloader.h"
+#include "sync/internal_api/public/sync_context_proxy.h"
 
 namespace syncer {
 
-AttachmentDownloader::~AttachmentDownloader() {
+SyncContextProxy::SyncContextProxy() {
+}
+
+SyncContextProxy::~SyncContextProxy() {
 }
 
 }  // namespace syncer